Investor Presentaiton

SPS | Balance Sheets December 31 Amounts in Millions, Except Share and Per Share Data Assets Current assets Cash and cash equivalents Accounts receivable, net Accounts receivable from affiliates Accrued unbilled revenues Inventories Regulatory assets Derivative instruments Prepaid taxes Prepayments and other Total current assets Property, plant and equipment, net Other assets Regulatory assets Derivative instruments Operating lease right-of-use assets Other Total other assets Total assets SPS | Investor Fact Book October 2023 | Xcel Energy 2022 2021 $2 $1 167 115 15 9 140 125 61 51 217 193 122 30 5 3 68 21 797 548 8,129 7,838 359 380 3 6 434 463 26 27 822 876 $9,748 $9,262 Liabilities and Equity Current liabilities Short-term debt 34 137 Borrowings under utility money pool arrangement 91 Accounts payable 209 172 Accounts payable to affiliates 23 16 Regulatory liabilities 148 54 Taxes accrued 61 47 Accrued interest 31 30 Dividends payable to parent 61 58 Derivative instruments Operating lease liabilities Other Total current liabilities Deferred credits and other liabilities Deferred income taxes Regulatory liabilities Asset retirement obligations Derivative instruments Pension and employee benefit obligations Operating lease liabilities 4 4 31 30 58 24 660 663 739 702 715 709 147 116 2 6 12 8 403 434 9 8 2,027 1,983 Other Total deferred credits and other liabilities Commitments and contingencies Capitalization Long-term debt 3,211 3,013 Common stock - 200 shares authorized of $1.00 par value; 100 shares outstanding at Dec. 31, 2022 and Dec. 31, 2021, respectively Additional paid in capital 3,311 3,091 Retained earnings Accumulated other comprehensive loss Total common stockholders' equity Total liabilities and equity 540 513 (1) (1) 3,850 3,603 $9,748 $9,262 62 62

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